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Apr
17
asked What is the determinant of the sum of a diagonal matrix and a matrix of ones?
Mar
23
asked What is the lower bound for an algorithm that reconstructs a permutation?
Mar
3
asked Is there a totally ordered set we can map any other totally ordered set to?
Dec
7
asked How to construct a polynomial from a radix-term?
Nov
27
asked Showing that $\lim_{x\to\infty}\left(\sqrt{x^2+c}-x\right)=0$
Jun
8
asked How can I make this recurrent equation non-recurrent?
Oct
16
asked How can I find a point where an osculating circle goes through a certain point?
Mar
30
asked Why is it impossible to define multiplication in Presburger arithmetic?
Oct
18
asked Squaring modulo n — is there a systematic way to generate the fixpoints?
Sep
8
asked The inverse of the inscribed angle theorem
Jun
21
asked An equivalent statement for convergence
May
29
asked Number of permutations with a certain number of fixpoints
Mar
30
answered 'Error term' in zeta function
Mar
28
asked Is there a general approach to solve integrals of the form $\int\frac f{f'}$?
Mar
11
asked How to come up with the gamma function?
Feb
20
asked Is there a reasonable generalization of the falling factorial for real exponents?
Jan
17
asked Question about a lemma on continuity
Jan
8
asked Given the cartesian coordinates of four points, how to calculate the interection of two lines they form?
Nov
22
asked Complexity of sorting algorthms
Nov
22
answered Solve $f(f(n))=n!$